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Highly esterified polyol polyesters with two or more pairs of conjugated double bonds

a polyol polyester and double bond technology, applied in the field of new polyol polyester compositions, can solve the problems of uncontrollable drying performance of paints and resins, limited voc content of architectural and industrial maintenance coatings, and long drying tim

Inactive Publication Date: 2010-02-18
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The patent describes a new composition that contains a highly esterified polyol polyester. This polyester has a polyol residue and multiple fatty acid ester groups, with some of the fatty acids containing double bonds. This composition can be used to make coatings and has solvent-like properties. It can also be used to control the drying time when applied to a surface. The polyol residue can be selected from sugars and sugar alcohols, with an average esterification of about 50% to 100%. The composition can also contain fatty acid methyl esters from various sources like soybean oil, safflower oil, and castor oil. The amount of these fatty acid methyl esters should be between 2% and 55% of the fatty acid esters."

Problems solved by technology

The level of VOC content for architectural and industrial maintenance coatings, for example, is limited by regulation.
However, while EP 1470200B1 teaches the value of fatty acid modified carbohydrates as achieving desired lower viscosity, low VOC resins and paints, the resulting paints and resins are uncontrolled in drying performance.
That is they either take much too long to dry or dry so fast that the coatings obtain insufficient adhesion to the coated surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0042]Preparation of Tung Oil Sucrose Polyester

[0043]387 grams of fatty acid methyl ester is made from Tung Oil and transferred into a 5 L reaction flask along with 15.2 grams potassium stearate, 89.6 grams sucrose and 3.4 grams potassium carbonate. The reaction flask is assembled for distillation, and equipped with the following; cold water condenser, overhead mechanical stirrer, temperature regulator, thermocouple, nitrogen sparge tube, heating mantle, receiving flask, dry ice condenser and misc. glassware adapters. The contents of the flask are mixed with vigorous stirring while heating to 135° C. A nitrogen sparge tube is introduced beneath the liquid surface to assist with methanol removal and to drive the reaction to completion. After the mixture has reacted a few hours, the sucrose will be dissolved and the solution will become a clear, pale brown liquid. 2725 grams additional dehydrated castor oil fatty acid methyl ester are then added along with an additional 4.5 grams pota...

example 2-4

[0044]Sucrose Polyester Made from Blended Tung and Soy Fatty Acid Methyl Ester

[0045]Both tung oil and soybean oil fatty acid methyl ester are made separately, according to the procedure outlined in Example 1. The purified fatty acid methyl esters are then blended to make the following methyl ester mixture; 25% Tung FAME / 75% Soy FAME (by weight).

[0046]Sucrose Polyester made from Blended Methyl Esters 25% Tung FAME / 75% soy FAME

[0047]409 grams of fatty acid methyl ester made from blended methyl esters (25% Tung / 75% Soy) are transferred into a 12 L reaction flask along with 16 grams potassium stearate, 94 grams sucrose and 3.8 grams potassium carbonate. The reaction flask is assembled for distillation, and equipped with the following; cold water condenser, overhead mechanical stirrer, temperature regulator, thermocouple, nitrogen sparge tube, heating mantle, receiving flask, dry ice condenser and misc. glassware adapters. The contents of the flask are mixed with vigorous stirring while ...

example 3

[0049]Example 2 is repeated except that the fatty acid methyl esters are blended to the following mixture; about 15% Tung FAME / about 85% Soy FAME. The sucrose polyester is then made using the blended methyl esters as described in example 2.

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Abstract

A composition comprising a highly esterified polyol polyester wherein the polyester comprises a polyol residue and a plurality of fatty acids esters, and wherein from about 5% to about 80% of the fatty acid esters contains two or more pairs of conjugated double bonds.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61 / 089,660 filed Aug. 18, 2008.FIELD OF THE INVENTION[0002]The disclosure herein relates to a new polyol polyester composition for use as a multifunctional non-volatile component in alkyd-based paint and / or coating compositions. More particularly the disclosure relates to a highly esterified polyol polyester having conjugated ester side chains.[0003]Volatile organic compounds (VOCs) are organic chemical compounds that have vapor pressures under normal conditions that are sufficiently high to allow them to vaporize and easily enter the atmosphere. Typical VOCs are light hydrocarbons such as paint thinner or gasoline. Many VOCs are applied in industrial uses including the manufacture and application of polymeric coatings, resins, or finished coatings.[0004]Considerable effort has been expended in recent years to develop coating compositions tha...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08F251/00
CPCC07H13/06
Inventor BERGER, ROGER STEPHENBACK, DEBORAH JEAN
Owner THE PROCTER & GAMBLE COMPANY